Monday, November 16, 2009

Lab Follow-Up

The lab involved neutralizing 25.00mL of an unknown concentration of a calcium hydroxide solution with a determined volume (via the buret) of 0.100M hydrochloric acid.

The solution is already at equilibrium when the titrating begins.
With the titration data it is possible to:
  • determine molar solubility of the calcium hydroxide in pure water
  • determine Ksp value for calcium hydroxide
  • determine molar solubility of calcium hydroxide in a calcium chloride solution
There was excess calcium hydroxide in the solution. the mass of calcium hydroxide is not relevant to the lab follow-up calculation. Furthermore, the calcium chloride was added to upset equilibrium. However, the mass of added calcium chloride is not relevant to the lab follow-up calculations.

The titration data is all that is needed to complete the calculations.


Next up - Acid-Base llbm. Two introductory sheets are on moodle. Notice the moodle calendar for upcoming quiz dates.


Talent alone won't make you a success. Neither will being in the right place at the right time, unless you are ready. The most important question is: 'Are your ready?' Johnny Carson Are you ready for acid-base solution equilibrium?